Roku Ultra 4k reboots randomly
I have a 4670RW with the January 2024 software update (12.5.5). It is connected to a TCL TV with built-in Roku, but I don't use that functionality.
I use the Roku Ultra remote to turn the TV on, and it automatically goes to the Roku Ultra's homepage. Once it reaches the homepage, navigation is very sluggish/laggy. If I'm able to get into an app, you may see it load, but the screen often goes black. Otherwise, after navigating the home page for a while, the screen will go black. After about 10-20 seconds, the TV indicates it has lost the Roku Ultra's HDMI signal, then it goes into the Roku Ultra's boot screen.
I will also note that the Roku Ultra always feels cool to the touch and there is zero indication it's overheated (which appears to be Google's most common answer to why a Roku will keep rebooting). It has usually sat idle for 8-16 hours before what happens above happens.
Once the Roku Ultra has completed rebooting, navigation starts sluggish, but recovers somewhat quickly. Any app I try to open, I get the "loading app" screen, then it eventually opens the app. After that one reboot, which happens once a day, the Roku Ultra performs normally for the rest of the day/night.
The only difference since this started happening has been the addition of a Samsung soundbar (through the TV's HDMI ARC port), which was installed on 1/20/2024 (so a few days before the latest update was installed). Could that somehow be affecting the Roku Ultra? I also have a microSD card inserted, but it's been in there for years. The TCL TV is not connected to the internet, so I haven't checked for updates in at least a year.
As I stated, my Roku device no longer randomly reboots. I have no idea what/why/how happened, and I merely found it a strange coincidence that it stopped randomly rebooting after I updated the TV's Roku firmware.